2003 7.3 running like crap dtc 1316 - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 04-12-2010, 08:23 PM Thread Starter
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Unhappy 2003 7.3 running like crap dtc 1316

i need some help with my 2003 powerstroke 7.3... started truck one day after sitting for two days truck fired up but ran like crap tried to drive and it wont go past 30mph and only max of 5psi of boost.. did all the normal maintanace oil change,fuel filter.. i checked red and green hoses going to wastegate an elbow was dry rotted and falling apart so i replaced but still is running like crap exgaust sounds like im running a chevy 350 with glass packs.. any help with this problem id greatly appriciate...
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post #2 of 10 Old 04-13-2010, 12:24 PM
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p1316 stands for Injector Circuit/IDM Codes Detected - My first guess would be that one of your under valve cover harness plugs came loose. Start it up and CAREFULLY feel each exhaust manifold for heat. If one of them is cold - you've isolated which side it is. If that is your problem, you can either buy a new harness with upgraded clips or buy the little black plastic clips from Ford to fortify the harness attachment.
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post #3 of 10 Old 04-13-2010, 12:31 PM
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Do a buzz test, it will tell you which side is disconnected.

OR just pull both valve covers and install the ford clips in them and you won't have to worry about this again.

It's your UVCH coming apart.

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post #4 of 10 Old 04-13-2010, 12:59 PM
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There is a writeup on how to fix it for 13 bucks in the tech files.

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post #5 of 10 Old 04-13-2010, 12:59 PM Thread Starter
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Im picking up wire harneses today i will let u know once installed thanks so much for help
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post #6 of 10 Old 04-13-2010, 01:00 PM
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Originally Posted by Marty View Post
There is a writeup on how to fix it for 13 bucks in the tech files.
I can do it for 50 cents if you give me two quarters and a bench grinder.
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post #7 of 10 Old 04-13-2010, 01:11 PM
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Im picking up wire harneses today i will let u know once installed thanks so much for help
Just buy the clips, part number F4TZ-6K854-C for 13 bucks.

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post #8 of 10 Old 04-13-2010, 01:12 PM
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I can do it for 50 cents if you give me two quarters and a bench grinder.
Or for free, I used a zip tie from a friend once. Still working...

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post #9 of 10 Old 04-13-2010, 09:10 PM Thread Starter
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Cool

That was it i started it up felt the manifolds and sure enough drivers side was cold.. just got done switching out harness.. truck runs better than before.. gonna replace passenger side tom thanks for all the help..
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post #10 of 10 Old 04-14-2010, 07:03 AM
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That's great. I'm glad it was the driver's side - its a lot easier to get to. Happy truckin'
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